Someone

<input type="text" id="i1">
<input type="text" id="i2">
<input type="text" id="i3">
<input type="text" id="i4">
<input type="text" id="i5">
<input type="text" id="i6">
<input type="text" id="i7">
<input type="text" id="i8">
<input type="text" id="i9">
<input type="text" id="i10">
<input type="submit" onclick="dothings()">

<script type="text/javascript">
function sortNumber(a, b)
{
return a - b
}

function dothings()
{
  a = new Array(11); 
  for(i = 1; i <= 10; i++) 
  { 
    a[i] = document.getElementById("i"+i).value; 
  } 
  a.sort(sortNumber);
  differences = new Array(10);
  for(i = 1; i <= 9; i++)
  {
    differences[i] = a[i+1] - a[i];
  }
}
</script>